Machines and how they work /
Weiss, Harvey.
Machines and how they work / Harvey Weiss. - 1st ed. - New York : Crowell, c1983. - 80 p. : ill ; 24 cm.
Booklist.
An introduction to six simple machines--the lever, the inclined plane, the screw, the wheel and axle, the wedge, and the pulley--and their use in more complex machines such as derricks, bulldozers, and metal lathes.
5.2 Follett Library Book Co. 5.2 Follett Library Resources. 5-8. 5-8 Follett Library Resources.
069004299X : $10.95 0690043007 (lib. bdg.) : $10.89
82045925
Gearing--Juvenile literature.
Levers--Juvenile literature.
Pulleys--Juvenile literature.
Simple machines--Juvenile literature.
Simple machines.
Machinery.
TJ147 / .W428 1983
621.8
Machines and how they work / Harvey Weiss. - 1st ed. - New York : Crowell, c1983. - 80 p. : ill ; 24 cm.
Booklist.
An introduction to six simple machines--the lever, the inclined plane, the screw, the wheel and axle, the wedge, and the pulley--and their use in more complex machines such as derricks, bulldozers, and metal lathes.
5.2 Follett Library Book Co. 5.2 Follett Library Resources. 5-8. 5-8 Follett Library Resources.
069004299X : $10.95 0690043007 (lib. bdg.) : $10.89
82045925
Gearing--Juvenile literature.
Levers--Juvenile literature.
Pulleys--Juvenile literature.
Simple machines--Juvenile literature.
Simple machines.
Machinery.
TJ147 / .W428 1983
621.8